Sorry bout not enough information at the moment due to im in collage. i thought of a idea where you have your Northumbrians, mercia and wessex as your saxons. But instead of having wales just by that but by splitting it with dyfed, gwynedd, powys, gwent in it as it will be more competitive with the campain. Also you will include the picts, alba and all the irish factions aswell with cornwall and north west of france. This could be done by putting the Athurian total war and VI2 together. As im a begginner for modding i duno if you need to ask permission for this or something.

More information and a easier explaing will come when i get back home soz for the inconvienience